# California Jury Instructions (npm · @pipeworx/mcp-california-jury-instructions)

California Jury Instructions — CACI (civil) and CALCRIM (criminal), official text as adopted by…

- Trust score: 82/100 (high trust)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `gateway.pipeworx.io`: 77/100, [markdown](https://verifymcp.io/servers/pipeworx-io-california-jury-instructions/california-jury-instructions-mcp.md), [page](https://verifymcp.io/servers/pipeworx-io-california-jury-instructions/california-jury-instructions-mcp)
- npm · `@pipeworx/mcp-california-jury-instructions`: 82/100 (this document), [markdown](https://verifymcp.io/servers/pipeworx-io-california-jury-instructions/pipeworx-mcp-california-jury-instructions.md), [page](https://verifymcp.io/servers/pipeworx-io-california-jury-instructions/pipeworx-mcp-california-jury-instructions)

## Channel facts

- Registry: `npm`
- Package: `@pipeworx/mcp-california-jury-instructions`
- Version: `0.2.1`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-11-05.

- **Supply Chain Security**: 100/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - No install/post-install scripts declared.
  - No production dependencies, so there is no dependency health to assess.
- **Provenance & Transparency**: 97/100
  - Source repository is publicly reachable at the declared URL.
  - Cryptographically verified build provenance (signed, bound to pipeworx-io/mcp-california-jury-instructions).
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 5 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 65/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 1290 tokens (~258/item across 5 items; 5 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 23/100
  - Stability observed for 7 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 5 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 6 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### How do I install the California Jury Instructions MCP server?

California Jury Instructions runs locally as an npm package, launched with npx -y @pipeworx/mcp-california-jury-instructions. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add pipeworx-io-california-jury-instructions -- npx -y @pipeworx/mcp-california-jury-instructions
```

### Cursor

```json
{
  "mcpServers": {
    "pipeworx-io-california-jury-instructions": {
      "command": "npx",
      "args": [
        "-y",
        "@pipeworx/mcp-california-jury-instructions"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "pipeworx-io-california-jury-instructions": {
      "command": "npx",
      "args": [
        "-y",
        "@pipeworx/mcp-california-jury-instructions"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add pipeworx-io-california-jury-instructions -- npx -y @pipeworx/mcp-california-jury-instructions
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "pipeworx-io-california-jury-instructions": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@pipeworx/mcp-california-jury-instructions"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add pipeworx-io-california-jury-instructions --command npx --arg -y --arg @pipeworx/mcp-california-jury-instructions
```

### Hermes

```yaml
mcp_servers:
  pipeworx-io-california-jury-instructions:
    command: "npx"
    args: ["-y", "@pipeworx/mcp-california-jury-instructions"]
```

### Netclaw

```json
{
  "McpServers": {
    "pipeworx-io-california-jury-instructions": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "@pipeworx/mcp-california-jury-instructions"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add pipeworx-io-california-jury-instructions -t stdio -c npx -a -y @pipeworx/mcp-california-jury-instructions
```

### Other

```json
{
  "mcpServers": {
    "pipeworx-io-california-jury-instructions": {
      "command": "npx",
      "args": [
        "-y",
        "@pipeworx/mcp-california-jury-instructions"
      ]
    }
  }
}
```

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-11-04 (score 82, +1)

No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-01 (score 81, +1)

- [functional regression] Security disclosure: unverified → fail

### 2026-10-31 (score 80, 0)

- [functional regression] Security disclosure: fail → unverified
- [functional] Package version: 0.2.0 → 0.2.1

### 2026-10-30 (score 80, +1)

No change was recorded against any check on this day. Stability & Change Management went from 0 to 3. That category is still filling its 30-day observation window: 0 days of observed history at the previous scan, 1 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-29 (score 79)

First indexed and scored.

## MCP tools (5)

### `caci_lookup` (~321 tokens)

Get the OFFICIAL text of a California Civil Jury Instruction (CACI) by number — e.g. "303" (Breach of Contract—Essential Factual Elements) or a verdict form like "VF-303". As adopted by the Judicial Council of California, current edition by default. Returns the instruction text (with bracketed/optional language as published), Directions for Use, Sources and Authority, Secondary Sources, and the revision history line ("New ...; Revised ..."). A revoked or reserved number returns status "revoked_or_reserved" with no text rather than a not-found error. ADOPTED text only — proposed revisions open for public comment are not covered. Pass `edition` (a prior year, e.g. a trial that occurred under an older instruction) to get that edition's text for instructions the Council flagged as changed since — only a bounded set of prior-year deltas is available (see ca_ji_editions), not a full archive. Use for "what is the official jury instruction for breach of contract" or to check the elements/Sources and Authority a civil claim instruction cites. Keyless.

Input parameters:

- `edition` (string): Optional: a prior edition year (e.g. "2025") instead of the current edition. Only available where this pack has baked a delta for that number — call ca_ji_editions to see what is available.
- `number` (string, required): CACI instruction or verdict-form number, e.g. "303", "CACI No. 303", or "VF-303".

### `calcrim_lookup` (~285 tokens)

Get the OFFICIAL text of a California Criminal Jury Instruction (CALCRIM) by number — e.g. "200" (Duties of Judge and Jury) or a verdict form like "VF-200". As adopted by the Judicial Council of California, current edition only — CALCRIM has no prior-edition delta baked (unlike caci_lookup's `edition` param; see ca_ji_editions for archived CALCRIM PDF links instead). Returns the instruction text (with bracketed/optional language as published), Bench Notes (incl. Instructional Duty), Authority, Related Issues, Secondary Sources, Commentary where present, and the revision history line. A revoked or reserved number returns status "revoked_or_reserved" with no text rather than a not-found error. ADOPTED text only — proposed revisions open for public comment are not covered. Use for "what is the official jury instruction for first-degree murder" or to check a criminal charge instruction's elements/Authority. Keyless.

Input parameters:

- `edition` (string): Optional. Any value other than the current edition year returns a clear "not available" response — no CALCRIM prior-edition text is baked.
- `number` (string, required): CALCRIM instruction or verdict-form number, e.g. "200", "CALCRIM No. 200", or "VF-200".

### `ca_ji_search` (~214 tokens)

Find the official California jury instruction NUMBER for a claim, cause of action, or criminal charge by keyword — "breach of contract" -> CACI No. 303; "first degree murder" -> a CALCRIM number; "self-defense", "negligence", "false imprisonment". Searches official instruction/verdict-form TITLES and series names across CACI (civil), CALCRIM (criminal), or both. Returns matching numbers/titles — call caci_lookup or calcrim_lookup with a number for the full text. This is a title search, not full-text search over instruction bodies. Keyless.

Input parameters:

- `limit` (number): Max results to return, default 10, max 25.
- `query` (string, required): Claim, cause of action, or charge, e.g. "breach of contract" or "first degree murder".
- `set` (string): Restrict to "caci" (civil) or "calcrim" (criminal); default "both".

### `ca_ji_whats_new` (~267 tokens)

Which CACI (civil) and/or CALCRIM (criminal) jury instructions are NEW or REVISED in an edition, aggregated in one call — e.g. "what's new in the 2026 CALCRIM edition" -> CALCRIM No. 1808 (Organized Retail Theft), 3235, 3238, 3459. For CACI this is the Judicial Council's own "Table of New and Revised CACI" front-matter list for that edition; for CALCRIM (which carries no equivalent table) it is derived from each instruction's own revision-history line matched against that edition's adoption date. Only the CURRENT edition is available (see ca_ji_editions for archived editions). Withdrawn/revoked numbers are not datable from this index and are always returned empty with a note — use caci_lookup/calcrim_lookup on a specific number to check revocation status. Keyless.

Input parameters:

- `edition` (string): Optional edition year, e.g. "2026". Defaults to the current edition; any other year returns a clear "not available" response.
- `set` (string): Restrict to "caci" (civil) or "calcrim" (criminal); default "both".

### `ca_ji_editions` (~144 tokens)

List the CURRENT edition year/adoption date and ARCHIVED edition PDF links for CACI (civil) and/or CALCRIM (criminal) jury instructions. Use when a caller needs a past year's edition (e.g. for a trial that occurred under an older version) or just wants to confirm which edition caci_lookup/calcrim_lookup text comes from. Archived editions are LINKED, not text-extracted — only the current edition's instruction text is available via caci_lookup/calcrim_lookup. Keyless.

Input parameters:

- `set` (string): Restrict to "caci" (civil) or "calcrim" (criminal); default "both".

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/pipeworx-io-california-jury-instructions/pipeworx-mcp-california-jury-instructions#diagnostics

## Score history

- 2026-11-05: 82
- 2026-11-04: 82
- 2026-11-03: 81
- 2026-11-02: 81
- 2026-11-01: 81
- 2026-10-31: 80
- 2026-10-30: 80
- 2026-10-29: 79

## Common questions

### What is the California Jury Instructions MCP server?

California Jury Instructions is an MCP server listed in the public MCP registry as io.github.pipeworx-io/california-jury-instructions. California Jury Instructions, CACI (civil) and CALCRIM (criminal), official text as adopted by… This page covers its npm package (@pipeworx/mcp-california-jury-instructions).

### Is the California Jury Instructions MCP server safe to use?

California Jury Instructions scores 82 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 5 November 2026. It declares no install or post-install scripts. Its build provenance is signed and verified. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the California Jury Instructions MCP server expose?

California Jury Instructions exposes 5 tools: caci_lookup, calcrim_lookup, ca_ji_search, ca_ji_whats_new, ca_ji_editions. Their descriptions and schemas cost roughly 1,231 tokens of context every time the server is loaded.

### Is the California Jury Instructions MCP server still maintained?

California Jury Instructions is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What licence is the California Jury Instructions MCP server under?

California Jury Instructions declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

## Links

- npm package: https://www.npmjs.com/package/@pipeworx/mcp-california-jury-instructions
- Socket report: https://socket.dev/npm/package/@pipeworx/mcp-california-jury-instructions
- Repository: https://github.com/pipeworx-io/mcp-california-jury-instructions
- Website: https://pipeworx.io/packs/california-jury-instructions
- Changelog RSS feed: https://verifymcp.io/servers/pipeworx-io-california-jury-instructions/pipeworx-mcp-california-jury-instructions.xml
- Changelog JSON feed: https://verifymcp.io/servers/pipeworx-io-california-jury-instructions/pipeworx-mcp-california-jury-instructions.json
- HTML version of this page: https://verifymcp.io/servers/pipeworx-io-california-jury-instructions/pipeworx-mcp-california-jury-instructions